This is strange. The compile (make) fails. I've compiled a few kernels in my life. Never happened before: Twice. First: .... CC [M] drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.o CC [M] drivers/net/wireless/b43legacy/pio.o CC [M] drivers/net/wireless/b43/wa.o CC [M] drivers/net/wireless/b43/dma.o CC [M] drivers/net/wireless/brcm80211/brcmfmac/btcoex.o LD [M] drivers/net/wireless/b43legacy/b43legacy.o CC [M] drivers/net/wireless/b43/pio.o CC [M] drivers/net/wireless/b43/rfkill.o LD [M] drivers/net/wireless/brcm80211/brcmfmac/brcmfmac.o LD [M] drivers/net/wireless/b43/b43.o LD drivers/net/built-in.o make: *** [drivers] Error 2 real 4m8.390s user 7m39.033s sys 0m27.441s 2 Second time: .... CC net/xfrm/xfrm_sysctl.o CC net/xfrm/xfrm_replay.o LD drivers/input/input-core.o LD drivers/input/built-in.o make: *** [drivers] Error 2 make: *** Waiting for unfinished jobs.... CC [M] net/xfrm/xfrm_algo.o CC [M] net/wireless/ethtool.o CC [M] net/xfrm/xfrm_user.o LD net/xfrm/built-in.o CC [M] net/wireless/mesh.o CC [M] net/wireless/ap.o CC [M] net/wireless/trace.o LD net/wireless/built-in.o LD [M] net/wireless/cfg80211.o LD net/built-in.o real 3m53.609s user 7m11.009s sys 0m26.165s 2 Note: (FWIW) typical successful completion time: about 5m 28s ------ 1. I re-tried the compile of yesterday (with mthd-1). Perfect again. I then retraced the very same steps, except with the new mthd-2. As shown above, still bad. Comments (I'm still in shock): 2. Is it possible that you really meant debug-_1_ (Comment 98)? (I've gone with debug-3 exclusively so far, assuming that was a typo) 3. To troubleshoot (if need be) I can do just 'make' (as opposed to make -j4) Slower but more explicit. 4. For clarity/completeness, this is what I always do: cd / rm -fr linux-3.10.1 time tar xJf /usr/local/downloads/linux-3.10.1.tar.xz ; echo $? cd linux-3.10.1 make mrproper ; echo $? cp -p /boot/config/config-3.10.1-3-P5E-74G .config make menuconfig make oldconfig ; echo $? *** Apply the indicated patches *** time make -j4 ; echo $? *** If the 4th patch is mthd-2: twice (consistently) fail. *** If the 4th patch is mthd-1: always OK Any ideas, suggestions?